| 摘要 |
The disclosure relates to a tube coupling body (10) having an open ended throughway (11) encircled by an annular socket (13) to receive a tube end. The annular socket has a grab ring (20) mounted on its outer wall having teeth (21,22) around both its inner and outer peripheries. The outer teeth (22) of the grab ring are angled towards the open end of the socket and engage the inner surface of the outer wall of the socket to prevent the grab ring from being extracted from the socket and the inner teeth (21) of the grab ring are angled towards the bottom of the socket to engage an outer surface of the tube located in the socket to resist extraction of the tube from the socket. The outer surface of the inner wall (14) of the socket has an encircling ridge (23) disposed opposite the teeth on the inner periphery of the grab ring to support the tube in engagement with the teeth at that location and to seal on the inside of the tube. <IMAGE> |
